it's what makes a subaru, a subaru. [ explosion ] >> i can't hear, i can't hear. >> a giant plant explosion levels a small town in texas. >> the shock wave was unbelievable and threw me down. >> get out of here. that second tank is about to go, get out of here! >> investigators zero in on a possible suspect in the boston marathon bombings. >> they see a person on surveillance video actually leaving one. backpacks there. >> my husband kept saying my leg, my leg. then the second explosion hit. >> the senate voted down a plan to expand background checks for gun buyers. >> police activity is delaying the big ceremony for the 1906 earthquake event. >> for the first time the event won't happen at lotta's fountain. it's moved to union bay. >> from across the bay to around the world, the stories that matter on "kpix 5 news this morning. captions by: caption colorado comments@captioncolorado.com >> your realtime captioner: linda marie macdonald. >>> we have a lot going on this morning. it is thursday, april 18. thanks for joining us. i'm anne makovec. michelle griego is off. >> hi, everyone. i'm fra